and you don't want to wait until the off-line mode becomes reliable. The ESV and KJV are both available for free under iBooks.
I trusted my offline mode this weekend, and it let me down. Thankfully I had my MiFi so I wasn't left in too much of a lurch. I was going to re-install Olive Tree, but I didn't care about search functions, just having a full bible available. So the I downloaded the ESV to iBooks and I won't have to worry about it from now on.